Screw-driver.



W. E. DAVIS.

`scREw DRIVER. x APPLiCATION FILED IULY 3l. 9l5.

' 1,162,461. r Patented 1101311915.

ELQL

fait@ smiths man;

:'.SWILLAM E. Devis, or Nrn? IrsWIcH, NEW HAMPSHIRE.

AV:T-tilt taiwan' "it inlay-concern Beit known thatI, VILLIAM E. Davis, a

-' "citizen-'ofthe United States of America, and

a resident of New Ipswich, county lof. Hillsboro, State of New Hampshire, have invented'fcertaiii new Tandl useful Improvements in Screw-Drivers, of which the following is a full and clear specification, reference being had to the accompanying drawings, in

which- Figure l is a side e1evationpartly in section, of a device embodying'one form of my invention; Fig. 2 is a sectional view thereof on the line 2-2 of Fig. 1; Fig. 3 is a side elevation illustrating one manner :of using my device; Fig. e is a section on the line 1 -4 of Fig. 3; and Fig. 5 is a side elevation illustrating another embodiment of my invention. j j

The object of this invention is to provide a screw-driver having a plurality of dilferent sized screw engaging blades, whereby the device may be, by a simple adjustment, readily adapted for.' driving screws of various sizes, as more fully hereinafter set forth.

In the drawing, a designates a bar longitudinally slotted at b, and in this slot is mounted a disk c having formed on its edge 'a series of different sized screw-driving blades d, said disk being rotatively clamped ,in the slot Z) b y means of a clamp screw e which passes through a central hole in the disk, the slot being ust wide enough to enable the disk to be clamped tightly by a slight turn of the, screw. lVith this construction, it will he observed that the bar a may be used as a handle which projects be yond the disk at diametrically opposite points and any one of the blades i may be brought into convenient position for use. To further lock the disk against rotation, I providethe disk with an annular series of holes f adapted to be engaged by a removable friction or other pin r/ inserted in a siiitable hole ZL. in one of the bifurcated parts of the handle, the inner end of the pin being adapted to enter a socket t in the opposite part of the handle bar. lilith this I ocking pin device, when the propei` screw-.driving edge is broughtinto the desired position, the locking pin is inserted and the disk will thereby be held against rotation during the handling of the tool. It will be understood, of-oourse, that any suitable locking pinor otherv device may bev used instead of the frictionally split pin shown.

, ,SCREW-Duiven Specificatonof Letters lv'fn- '"fltteiitetlffit.` i g- Appiication' inea July 31,1915. seriaiivaias. l i

the Abar-a other tools.

which is adapted to be,used infpositio'ns where no one ofthe.blades-(Zcanibe-used;

and at the other end of the bar I provide a gimlet counter-sink c. lVhen either the tool ,7e or j is in use, it is essential to cover and protect the opposite end of the bar so thatI it may be freely used without injuring thev user. For this purpose, I provide a removable knob-like cap Z which is adapted to frictionallv' lit over either end of the bar and inclose the tool at that end, an annular flange m being formed on the bar to -form a stop against which the cap abuts. To prevent the cap rotating, I provide the flange m with a lug n which interlocks with theedge ofthe cap. In Fig. 5 I show what may be termed the simplest embodiment of my invention, the' tools y' and le being omitted and the bar being bowed to form a better handle.

It is desirable at times to enable the screwdrivers Z to be used with a longer handle than is 4afforded `when'they are used as shown in Figs. l and 2. To enable this to be done, at a. point at one side of the disk, I provide a jointin the bar a. In the present instance I have shown a screw joint which consists of an internally threaded socket 0 and an externally threaded screw 79, this screw p being .longitudinally divided by4 an extension of the slot Z). By unscrewing the. part of the bar carrying the socket o and by removing the clamp screw e and the pin g, the disk c may be adjusted tothe position shown-in Fig. 3, in which position each one of its drivers (Z may be'rotated to aposition where it will extend beyondl the adjacent end of the remaining part of the main bar a, the sectional construction of the screw p permit-ting the disk to be forced outwardly between the parts thereof, the bifurcated parts of the handle being suilicient-ly resilient to permit this to be done. To hold the disk in this .advanced position, the pin g will be inserted in the holes in the bar formerly occupied by the clamp screw and the clamp screw -will be inserted in the holes in the bar formerly occupied by the pin, the pin socket 1f being internally threaded for the reception of the inner end of the clamp screw where that type of clamp screw is employed.

It will be observed that numerous modii- .cations as to the details of my device may 1. A screw driver of the class described,

consisting of a bar provided` with a longitu- .dinal slot about midway its length, the bar being-provided with a separable joint at one end :of said slot, a disk carrying at its edge a. plurality of different-sized screw drivers and means whereby the disk is held rotatively either in the center of the slot or at one end thereof, means being' provided for holding the disk against rotation in each of its positions, the proportions of the parts bei-ng such that when the disk is located at the end of the slot and the end section of the bar is detached at least one of the screw drivers on the disk will project beyond the end of the bar.

2. A screw driver consisting of a bar provided With a longitudinal slot midway its length, a disk jurnaled in said slot, and means for locking this disk in dierent rotative positions, said disk being provided on its edge with a plurality of different-sized screw drivers.

In testimony whereof I hereunto afx my signature.

WILLIAM E. DAVIS. 

